沉积学报2025，Vol.43Issue(5)：1569-1591,23.DOI:10.14027/j.issn.1000-0550.2025.046
青藏高原由海变陆的历史
The Odyssey from Marine to Continental Transition in the Tibetan Plateau:A duet of tectonic and sea-level change
摘要
Abstract
[Significance]The timing and processes of ocean disappearance in the Tibetan Plateau region are of great significance for understanding plateau uplift,climate-environmental evolution,and biodiversity development.[Progress]Through systematically compiling stratigraphic and geochronological data of the youngest marine sequen-ces since the Mesozoic in the Tibetan Plateau,the marine basins fall into two categories based on their basin-forming mechanisms.The remnant sea is a continental-marginal basin that persists after the ocean-crust disappears;its sedi-ments are preserved within suture zones and on adjacent continental margins.The epicontinental seaway formed by marine incursions onto pre-existing land,leaving their deposited sediments overlying continental interiors.Three rem-nant seas on the Tibetan Plateau vanished in north-to-south order:the Jinsha remnant sea at the end of the Triassic;the Bangong-Nujiang remnant sea in the latest Jurassic to Early Cretaceous;and the Yarlung Zangbo remnant sea in middle Eocene time.Their vanish disappearance closely corresponded to the collision of Qiangtang terrane with Asia,the Lhasa-Qiangtang collision,and the India-Asia collision,respectively.Six epicontinental seaways in the Tibetan Plateau formed and retreated in agreement with global sea-level changes:the Northern Qiangtang and Ganzi seaways in the Middle-Late Jurassic;the Northern Lhasa seaway in the Early Cretaceous;the Aksai Chin seaway in the Late Cretaceous,the Tarim seaways in the Late Cretaceous-Eocene,and Lesser Himalaya in the middle Eocene.These seaway intervals correspond to global sea-level highstands,and the demise of both the Lesser Himalaya and Tarim seaways aligns with sustained global sea-level fall.[Conclusions and Prospects]We concluded that marine-continental transitions in the Tibetan Plateau were jointly governed by tectonics and global sea-level fluctuations,with important implications for understanding the regional climate and environmental evolution.关键词
青藏高原/残留海/陆表海/高原隆升/古地理/古气候Key words
Tibetan Plateau/remnant sea/epicontinental seaway/plateau uplift/paleogeography/paleoclimate分类
天文与地球科学引用本文复制引用
胡修棉,安慰,王成善,马安林,王建刚,蒋璟鑫,张世杰,许艺炜,赖文,邓涛,薛伟伟..青藏高原由海变陆的历史[J].沉积学报,2025,43(5):1569-1591,23.基金项目
国家科技重大专项(2024ZD1001105) （2024ZD1001105）
国家自然科学基金项目(41525007)National Science and Technology Major Project,No.2024ZD1001105 （41525007）
National Natural Science Foundation of China,No.41525007 （）
